Examine source code of Truffle Shuffle

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#929676",
      "tab_background_text": "#faffe0"
    }
  },
  "version": "2.0",
  "name": "Truffle Shuffle",
  "manifest_version": 2,
  "description": "Design features  Jeff Cohen as Chunk from the 1985 movie Goonies.\n\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/cf52617faf542917ff3bbed8ad4864c8b5570063dd24c540d907c706ed15d625/http%3A//www.thegoonies.com/\">http://www.thegoonies.com/</a>"
}